a gunman fatally shot 20 first graders and six educators before killing himself in newtown's sandy hook elementary school in december. the school district's superintendent says the timing of the film crew's visit is "poor". r in world news, mexico's attorney general says the explosion that killed more than three dozen people at the headquarters of the country's state-run oil company was caused by natural gas. investigators say gas built up in the basement of the pemex building and was likely sparked by an electrical fault. 37 people were killed and dozens more injured in the explosion which collapsed several floors of the building last thursday afternoon. we will take a break. this live look. that temperatures in the city right after 48 [ m [ale announcer ] when heit comes to the financianal obstacles milimitary families face, w e understand. ou r financial advice is igeared specifically to cuo rrenten and former mily membemrs and their families. [ laughaus ] dad! ! dad!ad [ applappuse ] [ mal me announcer ] life br ings obstacles. usaua brings retirement adv. call orl visit us online.